Apparatus for holding a mask



FIG. 1 is a front view of the design for an apparatus for holding a mask;

FIG. 2 is a top view of the design for an apparatus for holding a mask;

FIG. 3 is a right-side and left-side view of the design for an apparatus for holding a mask;

FIG. 4 is a bottom view of the design for an apparatus for holding a mask;

FIG. 5 is a perspective view of the design of an apparatus for holding a mask;

FIG. 6 is a rear view of the design for an apparatus for holding a mask; and,

FIG. 7 is a left-side view of the design for an apparatus for holding a mask. 

CLAIM The ornamental design for an apparatus for holding a mask, as shown and described. 